Hydraulics and Fluid Mechanics problems
- 1. The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
Options- A. 1/2 depth
- B. 1/2 breadth
- C. 1/2 sloping side
- D. 1/4 (depth + breadth) Discuss
Correct Answer: 1/2 depth
- 2. When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
Options- A. a triangle
- B. a paraboloid
- C. an ellipse
- D. none of these Discuss
Correct Answer: a paraboloid
- 3. One stoke is equal to
Options- A. 10-2 m2/s
- B. 10-3 m2/s
- C. 10-4 m2/s
- D. 10-6 m2/s Discuss
Correct Answer: 10-4 m2/s
- 4. Viscous force is the __________ of shear stress due to viscosity and cross-sectionar area of flow.
Options- A. sum
- B. different
- C. product
- D. ratio Discuss
Correct Answer: product
- 5. The power transmitted through the pipe is maximum when the head lost due to friction is equal to
Options- A. one-fourth of the total supply head
- B. one-third of the total supply head
- C. one-half of the total supply head
- D. two-third of the total supply head Discuss
Correct Answer: one-third of the total supply head
- 6. Water is __________ liquid.
Options- A. a compressible
- B. an incompressible Discuss
Correct Answer: an incompressible
- 7. The water hammer in pipes occurs due to sudden change in the velocity of flowing liquid
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 8. When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
Options- A. 1.84(L - 0.1nH)H3/2
- B. 1.84(L - nH)H2
- C. 1.84(L - 0.1nH)H5/2
- D. 1.84(L - nH)H3 Discuss
Correct Answer: 1.84(L - 0.1nH)H3/2
- 9. The buoyancy depends upon the
Options- A. weight of the liquid displaced
- B. pressure with which the liquid is displaced
- C. viscosity of the liquid
- D. compressibility of the liquid Discuss
Correct Answer: weight of the liquid displaced
- 10. For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called
Options- A. continuity equation
- B. Bernoulli's equation
- C. Pascal's law
- D. Archimede's principle Discuss
Correct Answer: Bernoulli's equation
More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.